1201213256 has 16 divisors (see below), whose sum is σ = 2304654000. Its totient is φ = 586638864.

The previous prime is 1201213243. The next prime is 1201213289. The reversal of 1201213256 is 6523121021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745606 + ... + 1746293.

It is an arithmetic number, because the mean of its divisors is an integer number (144040875).

Almost surely, 2^1201213256 is an apocalyptic number.

It is an amenable number.

1201213256 is a deficient number, since it is larger than the sum of its proper divisors (1103440744).

1201213256 is a wasteful number, since it uses less digits than its factorization.

1201213256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491948 (or 3491944 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1201213256 is about 34658.5235692463. The cubic root of 1201213256 is about 1063.0165810222.

Adding to 1201213256 its reverse (6523121021), we get a palindrome (7724334277).

The spelling of 1201213256 in words is "one billion, two hundred one million, two hundred thirteen thousand, two hundred fifty-six".